Multifunction Power Meter: CPM-12D is a din rail mounting multifunction power meter with high accuracy measurement for single phase and three-phase system. Measuring all basic parameters ; V, I, P, Q, kWh, kVarh etc.. 1 RS485 Modbus RTU communication port as default, LCD display in front panel with buttons for programming. Auto wiring change (see remark as below) via software CE and FCC approved Remark: Auto wiring change have certain condition limit, please refer to operation manual for further details. Â Applications Energy management system Factory automation Intelligent power panel Industrial automation Power Grid automation Community power monitoring Intelligent green building